AT&T dangles up to $450 in incentives for T-Mobile customers who switch

You can bet T-Mobile has something to say about it

It's trying to lure T-Mobile customers away with a pair of incentives worth up to $450 ... if certain conditions are met, that is.

Beginning today, T-Mo members who switch to AT&T can earn a $200 credit per line if they also sign up for Next, the carrier's early upgrade program, buy a full-price device, or activate a device they already own.

There are some qualifiers in the fine print: Customers will need to sign up for an AT&T Mobile Share Value plan, and the credit is not available if they sign a two-year contract.

A very merry uncarrier to you

In addition, T-Mobile customers who switch to AT&T and trade in their existing phones will receive a promotion card for up to $250 that can be used on AT&T products and services.

Not all phones will earn that much, but AT&T's announcement noted it includes the "latest and most popular" ones will.

"This is a desperate move by AT&T on the heels of what must have been a terrible Q4 and holiday for them," T-Mobile CEO John Legere wrote in a statement posted on the carrier's website.

"I'm flattered that we have made them so uncomfortable! We used AT&T's cash to build a far superior network and added Un-carrier moves to take tons of their customers - and now they want to bribe them back! Consumers won't be fooled ... nothing has changed; customers will still feel the same old pain that AT&T is famous for. Just wait until CES to hear what pain points we are eliminating next. The competition is going to be toast!"